Book holding tray



FIG. 1 is a the lower left front perspective view of the book holding tray showing my new design;

FIG. 2 is the front elevational view thereof;

FIG. 3 is the right side elevational view, the left side being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a book holding tray, as shown and described. 